A sedimentation tank structure for underground mine stope

Abstract

The present application relates to the underground mine stope with sedimentation tank structure. The underground mine stope with sedimentation tank structure specifically includes main drainage roadway, two sedimentation lanes, two water wells and two water filtering structures, the main drainage roadway is provided with main drainage lane water inlet ditch and main drainage lane water outlet ditch, two sedimentation lanes are oppositely arranged on the two sides of the main drainage roadway, the inlet of each sedimentation lane is selectively communicated with the main drainage lane water inlet ditch, the outlet of each sedimentation lane is communicated with the main drainage lane water outlet ditch, two water wells are respectively arranged between the outlet of two sedimentation lanes and the main drainage lane water outlet ditch, and two height-adjustable water filtering structures are respectively arranged between the outlet of two sedimentation lanes and the corresponding water wells. The sedimentation tank structure cooperates with trackless equipment to work together, can effectively improve the stope sludge cleaning efficiency, reduce the main water silt cleaning frequency, and reduce the labor intensity of workers.

Description

Technical Field

[0001] This invention belongs to the technical field of wastewater treatment devices, and particularly relates to a sedimentation tank structure for underground mining sites. Background Technology

[0002] The main water sump in underground mines is not easily dredged using trackless equipment. It is typically cleaned manually or with sludge dredgers and slurry pumps, resulting in high labor intensity and low efficiency. Water sump cleaning has become a major challenge in underground mine production management. With the widespread use of backfill mining methods in underground mines, the amount of sludge produced during underground production has further increased, correspondingly increasing the difficulty of water sump cleaning. Some underground mines have adopted control measures such as abandoned roadways and sedimentation pits, but the sludge settling effect is poor, the drying time of the floating water on the surface of the sedimentation pit is long and inefficient, and the cleaning time is long. During the cleaning process, wastewater from the mining area can only be directly discharged into the main water sump.

[0003] Therefore, it is of great significance to find a layout for the sedimentation tank in the mining area that requires less engineering work and does not affect the sedimentation of mining wastewater during sludge removal. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a sedimentation tank structure for underground mining sites. This sedimentation tank works in conjunction with trackless equipment to improve the efficiency of sludge removal in the mining site, reduce the frequency of sludge removal from the main water tank, and reduce the labor intensity of workers.

[0005] This invention provides a sedimentation tank structure for underground mining sites, characterized in that it comprises:

[0006] The main drainage tunnel is provided with a main drainage tunnel inlet ditch and a main drainage tunnel outlet ditch.

[0007] Two sedimentation tunnels are arranged opposite each other on both sides of the main drainage tunnel. The inlet of each sedimentation tunnel is connected to the inlet ditch of the main drainage tunnel, and the outlet of each sedimentation tunnel is connected to the outlet ditch of the main drainage tunnel.

[0008] Two water separation wells are respectively located between the outlets of the two sedimentation tunnels and the outlet ditch of the main drainage tunnel;

[0009] Two height-adjustable filtration structures are respectively installed between the outlets of the two sedimentation tunnels and the corresponding water separation wells.

[0010] Preferably, a sedimentation ditch is provided at the entrance of each sedimentation ditch, and each sedimentation ditch can be optionally connected to the inlet ditch of the main drainage ditch.

[0011] Preferably, a first ditch baffle is detachably installed inside the sedimentation ditch.

[0012] Preferably, each sedimentation tunnel entrance is provided with a cleaning ramp with a slope of 10%-15% from high to low.

[0013] Preferably, the bottom of each sedimentation tunnel is set with a reverse slope of 1‰-5‰ from the inlet direction to the outlet direction.

[0014] Preferably, a water collection pit is provided at the bottom of each sedimentation tunnel on the side facing the entrance.

[0015] Preferably, a pump pit is provided at the bottom of each of the water separation wells.

[0016] Preferably, the main drainage tunnel outlet is connected to one of the water separation wells via an outlet, and the main drainage tunnel outlet is connected to another water separation well via a drainage pipe.

[0017] Preferably, a second drainage ditch baffle is provided between the main drainage ditch and the two drainage wells.

[0018] Preferably, the height of the water filtration structure is higher than the height of the second water ditch baffle.

[0019] The beneficial effects of this invention are:

[0020] This invention provides a sedimentation tank structure for underground mining areas. Wastewater from the mining area flows into the sedimentation tank through the main drainage tunnel's inlet ditch. After sedimentation in the sedimentation tank, the upper layer of accumulated water flows directly into the separation well, while the water in the lower layer of sludge is filtered through a filtration structure before flowing into the separation well. The separation well performs secondary sedimentation on the incoming wastewater, which then flows into the main water tank through the main drainage tunnel's outlet ditch, effectively reducing the amount of sludge in the main water tank. The two sedimentation tanks can be used interchangeably to achieve uninterrupted sedimentation treatment of mining water inflow. After drying, the sludge in the sedimentation tank is cleaned by trackless sludge removal equipment, improving the efficiency of sludge deposition and cleaning in mining areas, increasing the level of mechanized sludge removal, and reducing the labor intensity of sludge cleaning. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the plan layout of a sedimentation tank structure for an underground mine according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0024] Figure 3 for Figure 1 Cross-sectional view of the middle section (BB);

[0025] Figure 4 for Figure 3 A schematic diagram of the middle water filtration structure;

[0026] Figure 5 for Figure 4 Top view;

[0027] Explanation of reference numerals in the attached drawings: 1-Main drainage tunnel; 2-Sedimentation tunnel; 3-Water separation well; 4-Filter structure; 401-Baffle wall; 402-Filter plate; 403-Slotted component; 404-Metal frame; 405-Wire mesh; 406-Filter cloth; 5-Inlet ditch of main drainage tunnel; 6-Outlet ditch of main drainage tunnel; 7-Sedimentation tunnel ditch; 8-First ditch baffle; 9-Sump pit; 10-Pump pit; 11-Second ditch baffle. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Example 1 provides a sedimentation tank structure for underground mining sites, which works in conjunction with trackless equipment to improve the efficiency of sludge removal in the mining site, reduce the frequency of sludge removal from the main water tank, and reduce the labor intensity of workers. Figure 1 This is a schematic diagram of the plan layout of a sedimentation tank structure for an underground mine according to an embodiment of the present invention. Figure 2 for Figure 1 Sectional view of AA in the middle. Figure 3 for Figure 1 Middle BB cross section, combined with Figure 1-3 As shown, the sedimentation tank structure can be a masonry structure or a reinforced concrete structure, including a main drainage channel 1, two sedimentation channels 2, two water separation wells 3 and two water filtration structures 4.

[0031] Specifically, the main drainage roadway 1 is equipped with a main drainage roadway inlet ditch 5 and a main drainage roadway outlet ditch 6. The mine wastewater flows in from the main drainage roadway inlet ditch 5, and after treatment, flows out to the main water tank from the main drainage roadway outlet ditch 6.

[0032] Two sedimentation tunnels 2 are positioned opposite each other on both sides of the main drainage tunnel 1. The inlet of each sedimentation tunnel 2 is connected to the inlet ditch 5 of the main drainage tunnel, and the outlet of each sedimentation tunnel 2 is connected to the outlet ditch 6 of the main drainage tunnel. The sedimentation tunnels 2 can be connected to the main drainage tunnel 1 in a U-shape. Wastewater from the mining area flows into the sedimentation tunnel 2 from the inlet ditch 5 of the main drainage tunnel for sedimentation. After treatment in the sedimentation tunnel 2, the wastewater flows out through the outlet ditch 6 of the main drainage tunnel to the main water tank. The sedimentation tunnels 2 effectively increase the sedimentation time of sludge and improve the sludge filtration effect of the mining area sedimentation tank. The two sedimentation tunnels 2 are arranged opposite each other on both sides of the main drainage tunnel 1, utilizing the inlet tunnel as a turning chamber for trackless equipment, reducing the amount of corner cleaning work. The two sedimentation tunnels 2 can be selectively alternated for continuous sedimentation treatment of mining area water inflow, further reducing the amount of sludge entering the main water tank.

[0033] Two water separation wells 3 are respectively located between the outlets of the two sedimentation tunnels 2 and the outlet ditch 6 of the main drainage tunnel. Two height-adjustable filter structures 4 are respectively located between the outlets of the two sedimentation tunnels 2 and the corresponding water separation wells 3. After the mine wastewater settles in the sedimentation tunnels 2, the sludge settles, and the accumulated water is deposited on the sludge. By adjusting the height of the filter structures 4, the accumulated water on the top layer of sludge in the sedimentation tunnels 2 can be discharged, which can effectively shorten the drying time of the sludge in the sedimentation tank. The filter structures 4 have a certain filtration effect, and the water in the sludge is separated into the water separation wells 3 through the filter structures 4, reducing the water content of the sludge. The water separation wells 3 play a secondary sedimentation role. The water filtered by the filter structures 4 settles again in the water separation wells 3, and the clear water on the top flows into the outlet ditch 6 of the main drainage tunnel for discharge.

[0034] Combination Figure 1-3 As shown, the sedimentation tank structure used in the underground mine working area of ​​this embodiment requires the cooperation of trackless equipment. Wastewater from the mining area flows into sedimentation tunnel 2 from the main drainage tunnel inlet ditch 5. After sedimentation in sedimentation tunnel 2, the upper layer of accumulated water flows directly into the separation well 3, while the water in the lower layer of sludge is filtered by the filter structure 4 before flowing into the separation well 3. The separation well 3 performs secondary sedimentation on the incoming wastewater before it flows into the main water tank through the main drainage tunnel outlet ditch 6, effectively reducing the amount of sludge in the main water tank. The two sedimentation tunnels 2 can be used interchangeably to achieve uninterrupted sedimentation treatment of mining area water inflow. After drying, the sludge in sedimentation tunnel 2 is cleaned by trackless sludge removal equipment, improving the efficiency of sludge deposition and cleaning in the mining area, increasing the level of mechanized sludge removal, and reducing the labor intensity of sludge cleaning.

[0035] Furthermore, in combination Figure 1-3 As shown, each sedimentation tunnel 2 has a sedimentation tunnel ditch 7 at its entrance, and each sedimentation tunnel ditch 7 can be selectively connected to the main drainage tunnel inlet ditch 5. Mining wastewater can selectively flow from the main drainage tunnel inlet ditch 5 into one of the two sedimentation tunnels 2, allowing the two sedimentation tunnels 2 to be used interchangeably.

[0036] Furthermore, each sedimentation ditch 7 is equipped with a detachable first ditch baffle 8. When one sedimentation ditch 2 needs to be used, the first ditch baffle 8 at that sedimentation ditch 7 is opened, and the first ditch baffle 8 at the other sedimentation ditch 7 is closed, allowing for use. The first ditch baffle 8 enables switching between different sedimentation ditch 2s. The first ditch baffle 8 can be a metal plate or a wooden board. Two opposing slots can be vertically arranged on both sides of the interior of the sedimentation ditch 7. When sealing is required, the two ends of the first ditch baffle 8 are inserted into the slots.

[0037] Furthermore, each sedimentation tunnel 2 has a 10%-15% slope at its entrance, with the bottom level of sedimentation tunnel 2 lower than that of the main drainage tunnel 1. This facilitates sludge settling and prevents wastewater backflow. To facilitate the entry and exit of the trackless dredging equipment, a ramp is used for this settling. Based on the climbing ability of the existing trackless dredging equipment, a slope of 10%-15% is optimal for the dredging ramp.

[0038] Preferably, the bottom of each sedimentation tunnel 2 is sloped from the inlet to the outlet at a gradient of 1‰-5‰, preferably 3‰, meaning that the inlet level of the sedimentation tunnel 2 is slightly lower than the outlet level, which facilitates the collection of precipitated water during the dredging process.

[0039] Preferred, combined Figure 1-3 As shown, each sedimentation tunnel 2 has a water collection pit 9 at its bottom facing the entrance. During the dredging process, the precipitated water in the sludge flows along the slightly inclined sedimentation tunnel 2 to the water collection pit 9, and can then be pumped to another sedimentation tunnel 2 on the opposite side for sedimentation, thus improving the muddy working environment during the dredging process. The size of the water collection pit 9 can be determined according to the length of the sedimentation tunnel 2, and is not limited in this invention.

[0040] Preferred, combined Figure 1-3 As shown, a pump pit 10 is set at the bottom of the water separation well 3. The pump pit 10 is located close to the water filter structure 4. After secondary sedimentation, the wastewater in the water separation well 3 flows by gravity to the main drainage tunnel outlet ditch 6, and the bottom silt is deposited in the pump pit 10. Together with the sewage, it is pumped by the slurry pump to another sedimentation tunnel 2 on the opposite side for sedimentation, so as to prevent sewage from entering the main water tank.

[0041] Furthermore, the main drainage tunnel outlet ditch 6 is connected to a water separation well 3 via an outlet, and the main drainage tunnel outlet ditch 6 is connected to another water separation well 3 via a drainage pipe. When the wastewater in the water separation well 3 accumulates to a certain amount, it overflows into the main drainage tunnel outlet ditch 6 through the outlet or drainage pipe and flows into the main water tank.

[0042] Furthermore, in combination Figure 1-3As shown, a second drainage ditch baffle 11 is installed between the main drainage ditch outlet 6 and the two water separation wells 3. The second drainage ditch baffle 11 can prevent water from flowing back into the water separation wells 3 from the main drainage ditch outlet 6. The second drainage ditch baffle 11 can be a metal plate or a wooden board. The walls on both sides of the second drainage ditch baffle 11 can be provided with slots in the vertical direction, and the second drainage ditch baffle 11 is inserted into the slots.

[0043] Preferably, the height of the water filtration structure 4 is higher than the height of the second water ditch baffle 11. The height of the water filtration structure 4 is adjustable, and its minimum height must be higher than the height of the second water ditch baffle 11 to prevent wastewater in the water separation well 3 from flowing back into the sedimentation tunnel 2.

[0044] Example 2

[0045] Example 2 provides a sedimentation tank filtration structure, which is applicable to the sedimentation tank structure of Example 1. The filtration structure 4 is set at the end of the sedimentation channel 2, which can effectively shorten the drying time of the water accumulated on the upper layer of sludge and improve the cleaning efficiency of the sedimentation tank.

[0046] Figure 4 for Figure 3 A schematic diagram of the middle water filtration structure. Figure 5 for Figure 4 Top view, combined Figure 3-5 As shown, the sedimentation tank filtration structure 4 includes a baffle wall 401 and a filter plate 402.

[0047] Specifically, in combination Figure 4-5 As shown, the retaining wall 401 can be a concrete masonry structure. The retaining wall 401 is located at the end of the sedimentation tunnel 2 to seal the silt in the sedimentation tunnel 2 and prevent it from flowing into the main water tank. The retaining wall 401 has a vertical opening extending from the top to the bottom.

[0048] The filter plate 402 consists of multiple pieces, which are vertically slidably arranged in the notch of the retaining wall 401 to form a filter element. When it is necessary to adjust the height of the filter element, the filter plate 402 located at the top can be removed vertically from the top of the notch, thereby achieving the purpose of adjusting the height of the filter element.

[0049] Combination Figure 4-5As shown in the embodiment of this application, during use, the sewage settles in the sedimentation tunnel 2, the sludge sinks, and the accumulated water is deposited on the sludge. At this time, the top of the uppermost filter plate 402 is flush with the top of the retaining wall 401. After the sewage has completely settled, different numbers of filter plates 402 can be retained depending on the thickness of the sludge layer. By disassembling the filter plates 402, the top of the uppermost filter plate 402 is slightly higher than the sludge layer. The accumulated water on the upper layer can be directly discharged into the water separation well 3 on the other side of the retaining wall 401 through the opening, and then overflow into the main drainage tunnel 1 for discharge, effectively shortening the sludge drying time in the sedimentation tank. The filter plate 402 has a certain filtration effect. The water in the sludge is separated into the water separation well 3 through the filter plate 402, further reducing the water content of the sludge and shortening the sludge drying time. After the sludge has been dried to a certain extent, the sludge is cleaned using sludge cleaning equipment. The sludge has little water content, the working environment is not muddy, and the sludge cleaning efficiency is high.

[0050] Furthermore, in combination Figure 4-5 The opening extends from the top of the retaining wall 401 downwards to the bottom of the retaining wall 401. The bottom of the retaining wall 401 is the bottom surface of the sedimentation tunnel 2, so that the filter plates 402 can be spliced ​​from the bottom surface of the sedimentation tunnel 2 upwards in sequence, so that the water in the silt will not be deposited, but will be filtered out through the filter plates 402.

[0051] Furthermore, in combination Figure 4-5 The retaining wall 401 has two opposing rectangular grooves along its vertical direction, with their openings facing each other and connected in the width direction to the notch. The two ends of the filter plate 402 in the width direction are slidably connected to the two rectangular grooves. The rectangular grooves are used for splicing and disassembling the filter plate 402.

[0052] Furthermore, slotted components 403 matching the shape of the rectangular groove are provided within the rectangular groove. The two ends of the filter plate 402 in the width direction are slidably connected to the slotted components 403 within the two rectangular grooves, respectively. If the two sides of the filter plate 402 were directly connected to the concrete retaining wall 401, large gaps would exist, allowing silt to enter the water separation well and affecting the filtration effect. Simultaneously, the disassembly and assembly process would cause significant wear to the filter plate 402. By providing slotted components 403 with a channel steel structure within the rectangular groove, the two sides of the filter plate 402 are slidably connected to the slotted components 403, facilitating the disassembly and installation of the filter plate 402 by sliding it up and down along the slotted components 403, and providing a good sealing effect on both sides.

[0053] The slot component 403 can be connected to the retaining wall 401 by pre-embedded connectors. Of course, it can also be connected by adhesive or other methods, which are not limited in this invention.

[0054] In Embodiment 2 of this application, the filter plate 402 includes a metal frame 404 and a wire mesh 405. The two sides of the metal frame 404 are slidably connected to the slot pieces 403, and the wire mesh 405 is fixed to the metal frame 404. The wire mesh 405 filters large particles, blocking larger particles such as gravel in the silt. Furthermore, the steel wire mesh 405 is not easily damaged and has a long service life.

[0055] Furthermore, the metal frame 404 can be a U-shaped plate structure, including a web and wing plates opposite to each other on both sides of the web. The two wing plates of the metal frame 404 are slidably connected to the slot member 403. The U-shaped plate structure of the metal frame 404 is relatively lightweight and easy to assemble and disassemble.

[0056] A hollow section is formed on the web of the metal frame 404, and a wire mesh 405 is installed to cover the hollow section. The hollow section can be rectangular, elliptical, or other irregular shapes. After filtration, the filtered water passes through the hollow section and is discharged through the water separation well 3. The wire mesh 405 must completely cover the hollow section to prevent large particles from entering the water separation well.

[0057] Preferably, the filter plate 402 also includes a filter cloth 406, which is fixed to the metal frame 404 and covers the wire mesh 405. The filter cloth 406 can be made of materials such as polypropylene or polyester. The filter cloth 406 is used to filter small particles, blocking smaller particles such as mud and fine sand in the sludge. The filter cloth 406 is positioned behind the wire mesh 405, meaning that the water precipitated from the sludge is first filtered for larger particles by the wire mesh 405, and then filtered for smaller particles by the filter cloth 406. The wire mesh 405 provides some protection for the filter cloth 406, preventing damage from larger, sharp particles such as gravel.

[0058] Both the wire mesh 405 and the filter cloth 406 are fixedly connected to the metal frame 404 by bolts. Of course, they can also be connected by means of adhesive bonding, etc., and this invention does not limit this.

[0059] In other embodiments, the filter plate 402 may also be two metal plates with hollow sections, with the wire mesh 405 and filter cloth 406 sandwiched between the two metal plates. This embodiment 2 only describes a preferred form of the filter plate structure and does not constitute a limitation.

[0060] In summary, the sedimentation tank structure provided by this invention for underground mine workings is suitable for different roadway cross-sections, shapes, and slopes. It improves the efficiency of silt deposition and cleaning from mine water inflow, effectively reduces silt entering the main water tank, enhances the level of mechanized silt removal, reduces the labor intensity of silt removal, and lowers the operating costs of silt removal. Simultaneously, it leads the reform of silt removal methods in underground mines and has promotional value among underground mining enterprises.

[0061] The above-described embodiments are preferred embodiments of the present invention and are only used to facilitate the illustration of the present invention. They are not intended to limit the present invention in any way. Any person skilled in the art who makes local modifications or alterations to the technical content disclosed in the present invention without departing from the scope of the technical features of the present invention shall still fall within the scope of the technical features of the present invention.

Claims

1. A sedimentation tank structure for underground mining operations, characterized in that, include: The main drainage tunnel is provided with a main drainage tunnel inlet ditch and a main drainage tunnel outlet ditch. Two sedimentation tunnels are arranged opposite each other on both sides of the main drainage tunnel. Each sedimentation tunnel has a sedimentation ditch at its entrance. Each sedimentation ditch can be selectively connected to the inlet ditch of the main drainage tunnel. A first ditch baffle can be detachably installed in each sedimentation ditch. The first ditch baffle is used to control the connection and disconnection between the corresponding sedimentation tunnel and the inlet ditch of the main drainage tunnel, so as to realize the interchangeable use of the two sedimentation tunnels. The outlet of each sedimentation tunnel is connected to the outlet ditch of the main drainage tunnel. Two water separation wells are respectively located between the outlets of the two sedimentation tunnels and the outlet ditch of the main drainage tunnel; Two height-adjustable filtration structures are respectively installed between the outlets of the two sedimentation tunnels and the corresponding water separation wells.

2. The sedimentation tank structure for underground mining sites according to claim 1, characterized in that, At the entrance of each sedimentation tunnel, a cleaning ramp with a slope of 10%-15% is provided from high to low.

3. The sedimentation tank structure for underground mining sites according to claim 2, characterized in that, The bottom of each sedimentation tunnel is set with a reverse slope of 1‰-5‰ from the inlet to the outlet.

4. The sedimentation tank structure for underground mining sites according to claim 3, characterized in that, Each sedimentation tunnel has a water collection pit at its bottom facing the entrance.

5. The sedimentation tank structure for underground mining sites according to claim 1, characterized in that, Each of the aforementioned water separation wells has a pump pit at its bottom.

6. The sedimentation tank structure for underground mining sites according to claim 1, characterized in that, The main drainage tunnel outlet is connected to one of the water separation wells via an outlet, and the main drainage tunnel outlet is connected to another water separation well via a drainage pipe.

7. The sedimentation tank structure for underground mining sites according to claim 6, characterized in that, A second drainage ditch baffle is installed between the main drainage ditch and the two drainage wells.

8. The sedimentation tank structure for underground mining sites according to claim 7, characterized in that, The height of the water filtration structure is higher than the height of the second water ditch baffle.

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